QuickChart API

quickchart · Developer Tools

Developer Tools No Auth Free & Open developer_tools

An API to generate charts and QR codes using QuickChart services.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Generate a chart (GET)

Generate a chart based on the provided parameters.

https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart?chart=example&width=1&format=json&height=1&backgroundColor=example

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart?chart=example&width=1&format=json&height=1&backgroundColor=example"

import requests
params = {
    "chart": "example",
    "width": "1",
    "format": "json",
    "height": "1",
    "backgroundColor": "example"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart');
url.searchParams.set('chart', 'example');
url.searchParams.set('width', '1');
url.searchParams.set('format', 'json');
url.searchParams.set('height', '1');
url.searchParams.set('backgroundColor', 'example');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart")
	q := baseURL.Query()
	q.Set("chart", "example")
	q.Set("width", "1")
	q.Set("format", "json")
	q.Set("height", "1")
	q.Set("backgroundColor", "example")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart")
uri.query = URI.encode_www_form({
  "chart" => "example",
  "width" => "1",
  "format" => "json",
  "height" => "1",
  "backgroundColor" => "example"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart?" . http_build_query([
    "chart" => "example",
    "width" => "1",
    "format" => "json",
    "height" => "1",
    "backgroundColor" => "example"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Generate a QR code (GET)

Generate a QR code based on the provided parameters.

https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr?text=example&width=1&format=json&height=1&margin=1

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr?text=example&width=1&format=json&height=1&margin=1"

import requests
params = {
    "text": "example",
    "width": "1",
    "format": "json",
    "height": "1",
    "margin": "1"
}
response = requests.get(
    "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr",
    params=params,
)
print(response.json())

const url = new URL('https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr');
url.searchParams.set('text', 'example');
url.searchParams.set('width', '1');
url.searchParams.set('format', 'json');
url.searchParams.set('height', '1');
url.searchParams.set('margin', '1');

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr")
	q := baseURL.Query()
	q.Set("text", "example")
	q.Set("width", "1")
	q.Set("format", "json")
	q.Set("height", "1")
	q.Set("margin", "1")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr")
uri.query = URI.encode_www_form({
  "text" => "example",
  "width" => "1",
  "format" => "json",
  "height" => "1",
  "margin" => "1"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/qr?" . http_build_query([
    "text" => "example",
    "width" => "1",
    "format" => "json",
    "height" => "1",
    "margin" => "1"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

POST Generate a chart (POST)

Generate a chart based on the provided configuration in the request body.

https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart

Hover any highlighted part to learn what it does

curl -X POST "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart"

import requests
response = requests.post(
    "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart';

const response = await fetch(url, {
  method: 'POST',
}); 
const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	targetURL := "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart"
	req, _ := http.NewRequest("POST", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Post.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/quickchart.io/1.0.0/chart";
$opts = ["http" => [
    "method" => "POST",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with QuickChart API?

QuickChart API is a Developer Tools API. Developers commonly use developer tools APIs for:

automating code review and quality checks
integrating CI/CD pipelines and build systems
managing feature flags and A/B tests
monitoring errors and application performance
generating and validating test data

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. QuickChart API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide

Open documentation ↗